First, Do No Harm is designed for use with Mrk Borg, a game by Freeleague Publishing. With a total of 25 rooms across 4 levels, explore the Raven’s Claw Sanatorium while attempting to survive the numerous paranormal events. First, Do No Harm introduces a brand new SANITY mechanic that is sure to keep your PCs on their toes – as if Mork Borg wasn’t deadly enough!